【简答题】小红想进一步了解有关声音的一些知识,于是她查找了以下资料: 共鸣 两个发声频率相同的物体,如果彼此相隔不远,那么,使其中一个发声, 另一个也有可能跟着发声,这种现象就叫“共鸣”,有趣的是:几乎随便什么 容器里的空气(空气柱),都会同发声物体共鸣,拿一个发声体靠近容器,如果频率适当的话,那么,空气柱就会引起共鸣,使声音大大增强.根据声学家 的研究,声音的频率越高,声波的波长越短,只要波长等于空气柱长...
【单选题】Frankfurt, Germany, is in one of the most _____ populated regions of Western Europe. (1999.6)
【判断题】How to format a paper is not a basic communication skill for communication.
【简答题】商贸公司从事生产经营活动,涉及国家或地方多个税种,包括( )。
【单选题】good communication skill
【简答题】what is the definition of communication skill?
【单选题】Frankfurt, Germany, is one of the most _____ populated regions of Western Europe.
【单选题】Frankfurt,Germany,is in one of the most______ regions of Western Europe.
【单选题】Frankfurt, Germany, is one of the most ___ populated regions in Western Europe.
【简答题】Initiative , independent and good communication skill .